Fixed a crash when trying to store a custom field with "Byte Angle" type.
Fixed: in some cases custom field types stored in the map's .dbs file were not applied when loading a map.
Sector and Thing Info panels: fixed possible crash when trying to show unknown thing/sector flag.
Hints were not shown properly when multiselection was started while highlighting a map element.
Copy/Paste actions work much faster now.
Classic modes: rendered grid size in now adjusted to current zoom level.
